OSTERVILLE –A Centerville woman was arrested Friday afternoon after allegedly driving under the influence of painkillers with her 7-month-old son in the car, according to Barnstable police.

The boy was immediately taken into custody of the Department of Children and Families, police said.

When Kimberly Brown, 31, left a doctor’s appointment in Falmouth on Friday, her physician immediately alerted police that she left his office intoxicated with a child in the car, police Sgt. Sean Sweeney said. Shortly after, the boy’s DCF caseworker and a witness on the road also notified police that they believed Brown was driving under the influence, said Sweeney.

“It was unbelievable,” the sergeant said. “I’ve been on for a long time, over 30 years, and I never see such a lack of concern for a child.”

Police Officer Joshua Maloney spotted Brown in a black Jeep at 2:30 p.m. at Route 28 and Brigantine Avenue in Osterville, police said. Sweeney and two women from DCF arrived at the scene quickly.

Brown was immediately placed under arrest and DCF took custody of her son, said Sweeney.

Police were shocked with how intoxicated Brown was and lack of concern she had for her son, he said.

“She almost fell asleep standing up right in front of us,” Sweeney said. “Any mother would have been frantic about their 7-month-old. She wasn’t at all. She didn’t inquire about the baby at all.”

Brown was charged with operating a vehicle under the influence of drugs, child endangerment while operating under the influence, driving without a license, driving uninsured, driving with revoked registration and driving negligently, police said.

Before falling asleep in the back of the cruiser, Brown allegedly admitted to police that she had a history of abusing painkillers. Sweeney said he fears what could have happened to the child if DCF workers did not intervene.

“This goes to show you that when everyone does the right thing – when everyone is on the same page – things go as they should,” the sergeant said. “You could have had a very horrific tragedy involving a 7-month-old if everyone hadn’t done their part.”

Brown is being held on $700 bail. She will be arraigned Monday morning in Barnstable District Court.